Journal of the Serbian Chemical Society 2004 Volume 69, Issue 5, Pages: 335-341
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Synthesis, as well as linear and nonlinear fluorescence properties of 5, 5’-bis(4-N-carbazolylstyryl)-2, 2’-bithiophene
Xia Guang-Ming, Lu Ping, Xu Gui-Bao
Anew bithiophene-based organic luminescence material, named 5,5’-bis(4-N-carbazoylstyryl)- 2,2’-bithiophene (BCSBT), was synthesized. Its single-photon excited fluorescence band is located in the range of 520–530 nm, with a quantum yield of around 10 %. The compound emits strong two-photon-excited fluorescence when excited by 200 fs laser pulses. The two-photon absorption cross section of BCSBT was found to be 124x10–50 cm4 s by the two-photon-excited fluorescence method.
Keywords: two-photon absorption, up-converted fluorescence, bithiophene derivatives
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